Hello Abubakar Abdulkadir,
Thanks for reaching out Microsoft Q&A forum!
As I understood that you're encountering an issue with identity validation when trying to sign up for Azure using your school email. This may be due to various reasons.
I would suggest you to raise a New Support Request with Microsoft team, refer the document once Open Support requests.
Ensure that there is no Personally Identifiable Information (PII) (like passwords etc.) in the request details whatsoever anywhere.
Please expect an immediate email acknowledgement post submission with all the case details and the Support Request Number. The internal teams would reach out to you to follow through further and provide a resolution as applicable.
Please refer the document once, Trouble shoot issues when you sign up for a new account in the Azure portal.
Please let us know if you have any further questions. Thank you!
Do click Accept Answer
and Yes
for was this answer helpful.